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Authenticity of “orange fruit drinks” in the Czech market

Authenticity of “orange fruit drinks” in the Czech market. Author: Veronika Soukupová Supervisor: Doc. Ing. Michal Voldřich CSc. Objective: chemometric methods for the fruit content determination estimation fruit content. Legislation dealing with fruit beverage:

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Authenticity of “orange fruit drinks” in the Czech market

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  1. Authenticity of “orange fruit drinks” in the Czech market Author: Veronika Soukupová Supervisor: Doc. Ing. Michal Voldřich CSc.

  2. Objective: • chemometric methods for the fruit content determination • estimation fruit content • Legislation dealing with fruit beverage: • Law No 110/1997 Food law (law No 274/2003 as amended) • Decree No 335/1997 (decree No 45/2000 as amended) specify the categories of fruit non-alcoholic beverage -juice 100% • - nectar less then 100 but more than 25-50% according the sort of fruit • - fruit drink at least on fourth of the limit given for coresponding nectars • - lemonade need not to contain any fruits • EU - AIJN (Asociation of the Industry of Juices and Nectars)

  3. Markers and methods: Samples: Walmark a.s. (5 samples), Linea Nivnice a.s. (3 samples), Kofola a.s. (3 samples), Generall Botlers ČR s.r.o.(1 sample), Limova s.r.o. -produces in comcession (1 sample), Chiquita (1 sample), Pfanner (1sample), Ahold CZ a.s.(1 sample), Rauch (1 sample), Parmalat Hungaria Rt. (1 sample), Buda-Mont s.r.o. (1 sample), Poděbradka a.s.(1 sample)

  4. Results and discussion: • Fruit content was determined on the base of consequent markers: formol number, malic acid, K, flavonoids and sorbitol. • Measuring values was compared with indicated data of AIJN. • AIJN

  5. 3 7 13 20 - estimation of fruit content was lower by more then 50% then was declared on the label No

  6. Cluster analysis of the samples with declared fruit content 12.5% Samples whit lower fruit content

  7. Conclusion: • Accuracy of estimation fruit content in orange beverages was 5%. • eleven samples contained more or similar the required fruit content • five samples in ”grey zone” (6-10%) • four samples containing very low content of fruit (<6%)

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